Williams Township homicide

Williams Township homicide

Harry Fisher/The Morning Call

Northampton County District Attorney John Morganelli (left) is seated next to investigator Brian Roberts of the Pennsylvania State Police, as Morganelli holds a news conference to announce the arrest of Elizabeth Collazo in the homicide of her estranged boyfriend, Mark Werkheiser of Williams Township.

Northampton County District Attorney John Morganelli (left) is seated next to investigator Brian Roberts of the Pennsylvania State Police, as Morganelli holds a news conference to announce the arrest of Elizabeth Collazo in the homicide of her estranged boyfriend, Mark Werkheiser of Williams Township. (Harry Fisher/The Morning Call)

Northampton County District Attorney John Morganelli (left) is seated next to investigator Brian Roberts of the Pennsylvania State Police, as Morganelli holds a news conference to announce the arrest of Elizabeth Collazo in the homicide of her estranged boyfriend, Mark Werkheiser of Williams Township.